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Loading string from Web config (C#)

File: Web.config <?xml version="1.0"?> <configuration>   <appSettings>     <add key="DataFilePath" value="e:\NetworkShare\Documents\WebApp\Shared"/>   </appSettings>    </configuration> File: ShowSettings.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="ShowSettings.aspx.cs" Inherits="ShowSettings" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">   <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>Untitled Page</title> </head> <body>     <form ID="form1" runat="server">     <div>       <asp:Label ID="lblTest" runat="server" />         </div>     </form> </body> </html> File: ShowSettings.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Web.Configuration; public partial class ShowSettings : System.Web.UI.Page {     protected void Page_Load(object sender, EventArgs e)     {     lblTest.Text = "This app will look for data in the directory:<br /><b>";     lblTest.Text += WebConfigurationManager.AppSettings["DataFilePath"];     lblTest.Text += "</b>";         } }